Metabolic Phenotyping and Follow-Up of Patients With and Without Diabetes After New Onset of STEMI

Inclusion Criteria: * Condition after new onset of ST-segment elevation myocardial infarction (STEMI) * Age 18-80 years * HbA1c \<9.0% * People with diagnosis of diabetes mellitus according to ADA and DDG criteria (i.e. HbA1c ≥6.5% and/or pathological oral glucose tolerance test) * Healthy people with normal glucose tolerance status according to ADA and DDG criteria (i.e. HbA1c \<5.7% and normal OGTT) * People with impaired glucose metabolism ("prediabetes") according to ADA and DDG criteria (i.e. impaired fasting glucose and/or impaired glucose tolerance and/or HbA1c 5.7-6.4%) * Consent-able, hemodynamically stable people, without sedation (e.g. opiates) or other interfering medication (e.g. catecholamines) Exclusion Criteria: * Diabetes mellitus category 3 A-H (ADA criteria), gestational diabetes * Current pregnancy * Infectious diseases, acute infections / fever * Immunosuppressive therapy * Severe chronic renal, liver or heart disease (e.g. serum creatinin ≥1.6 mg/dl, peripheral artery occlusive disease stage IV) * Malignant diseases * Severe chronic psychiatric illness or addiction * Participation in an intervention trial